Method and apparatus for transmitting and receiving data in wireless communication system

Abstract

Provided are a method and apparatus for transmitting and receiving data in a wireless communication system. A method of performing, by a terminal, random access includes: obtaining physical random access channel (PRACH) resource allocation information for the random access; transmitting a random access preamble, based on the PRACH resource allocation information; receiving a random access response (RAR) based on the random access preamble; and transmitting Msg3, which is a radio resource control (RRC) layer message, a plurality of times based on uplink resource allocation information included in the RAR.

The invention claimed is: 
     
       1. A method of performing, by a terminal, random access procedure, the method comprising:
 receiving a system information block 1 (SIB1) comprising first information indicating a Msg3 transmission repetition and second information indicating a number of repetitions of a Msg3 transmission; 
 selecting a physical random access channel (PRACH) resource based on the first information; 
 transmitting a random access preamble based on the selected PRACH resource; 
 receiving a random access response (RAR) in response to the transmission of the random access preamble; 
 performing the repetitions of the Msg3 transmission, based on the second information; and 
 starting a timer for a contention resolution after an end of all the repetitions of the Msg3 transmission. 
 
     
     
       2. The method of  claim 1 ,
 wherein the SIB1 further comprises third information indicating a first threshold, and 
 wherein selecting the PRACH resource comprises:
 selecting a synchronization signal block (SSB) based on the third information; and 
 determining a PRACH occasion corresponding to the selected SSB. 
 
 
     
     
       3. The method of  claim 2 , wherein selecting the SSB comprises selecting a first SSB with a signal strength above the first threshold. 
     
     
       4. The method of  claim 1 , wherein the RAR comprises information indicating an identifier of the random access preamble. 
     
     
       5. The method of  claim 1 , wherein the RAR comprises information indicating one or more resources for the Msg3. 
     
     
       6. A method of allocating, by a base station, a resource for random access procedure to a terminal, the method comprising:
 transmitting a system information block 1 (SIB1) comprising first information indicating a Msg3 transmission repetition and second information indicating a number of repetitions of a Msg3 transmission; 
 receiving a random access preamble based on a physical random access channel (PRACH) resource based on the first information; 
 transmitting a random access response (RAR) in response to the reception of the random access preamble; and 
 receiving the repetitions of the Msg3 transmission, based on the second information. 
 
     
     
       7. The method of  claim 6 , wherein the RAR comprises information indicating an identifier of the random access preamble and information indicating one or more resources for the Msg3. 
     
     
       8. A terminal performing random access procedure, the terminal comprising:
 a transceiver; and 
 at least one processor connected to the transceiver, 
 wherein the at least one processor is configured to
 receive a system information block 1 (SIB1) comprising first information indicating a Msg3 transmission repetition and second information indicating a number of repetitions of a Msg3 transmission, 
 select a physical random access channel (PRACH) resource based on the first information, 
 transmit a random access preamble based on the selected PRACH resource, 
 receive a random access response (RAR) in response to the transmission of the random access preamble, 
 perform the repetitions of the Msg3 transmission, based on the second information, and 
 start a timer for a contention resolution after an end of all the repetitions of the Msg3 transmission. 
 
 
     
     
       9. The terminal of  claim 8 ,
 wherein the SIB1 further comprises third information indicating a first threshold, and 
 wherein the at least one processor is further configured to;
 select a synchronization signal block (SSB) based on the third information; and 
 determine a PRACH occasion corresponding to the selected SSB. 
 
 
     
     
       10. The terminal of  claim 9 , wherein the at least one processor is further configured to select a first SSB with a signal strength above the first threshold. 
     
     
       11. The terminal of  claim 8 , wherein the RAR comprises information indicating an identifier of the random access preamble. 
     
     
       12. The terminal of  claim 8 , wherein the RAR comprises information indicating one or more resources for the Msg3. 
     
     
       13. A base station allocating a resource for random access procedure to a terminal, the base station comprising:
 a transceiver; and 
 at least one processor connected to the transceiver, 
 wherein the at least one processor is configured to:
 transmit a system information block 1 (SIB1) comprising first information indicating a Msg3 transmission repetition and second information indicating a number of repetitions of a Msg3 transmission, 
 receive a random access preamble based on a physical random access channel (PRACH) resource based on the first information, 
 transmit a random access response (RAR) in response to the reception of the random access preamble, and 
 receive the repetitions of the Msg3 transmission, based on the second information. 
 
 
     
     
       14. The base station of  claim 13 , wherein the RAR comprises information indicating an identifier of the random access preamble and information indicating one or more resources for the Msg3.